Radium fuel pulse damper install9/23/2023 ![]() Supercharged Lotus intercooler boss remains functional Easily converted to a pressure regulated return system Works with factory and aftermarket injectors Stealth laser etched logos pre anodizing Anodized surface finish for corrosion resistance The fuel rail was designed to clear the intercooler mounting boss (Exige-S/2-Eleven only) as best as possible without sacrificing fuel flow. This helps alleviate all high frequency pressure fluctuations. ![]() The center port accommodates the 2ZZ-GE fuel pulse damper (not included) from the OEM fuel rail. These ports use positive o-ring seals instead of tapered pipe threads which commonly damage aluminum threads and lead to fuel leaks. Both ends of the rail are tapped to 8AN ORB female threads. This high volume fuel rail works on all 2ZZ-GE engines. To verify clearance, the dimensional drawings on the product pages can be used as a reference guide. Ample space around the fuel rail port(s) is necessary for larger accessories such as fuel pressure regulators, fuel pressure gauges, and fuel pulse dampers. A center port for the factory fuel pulse damper is also included.ĨAN ORB Adapter Fittings can be found HERE.ĨAN ORB Direct Mount Regulators can be found HERE.įuel Pressure Gauge Adapters can be found HERE.Īppropriate fittings must be selected based on the specific application. Made in USA.The end ports of this fuel rail are tapped for 8AN ORB. The company designs and manufactures innovative universal performance solutions including fuel surge tanks, catch cans and fuel pressure regulators, and application specific performance solutions ranging from fuel delivery to turbo systems. Radium Engineering is located in Clackamas, Oregon. ![]() Radium Engineering's products are made in the USA.įor more information, email or visit the company's dealer finder at About Radium Engineering: Both FPD designs are resistant to corrosion from all fuel types including popular alcohol blends such as E85. The FPD-R and FPD-XR are CNC machined from billet aluminum, anodized for a high-quality lasting finish and laser engraved. Both FPD designs are available as either direct mount for installing on a fuel rail, or inline versions for mounting remotely near the fuel rail, and both offer multiple thread size fittings options. The FPD-XR fuel pulse damper is designed for vehicles with base fuel pressure between 43-78 PSI. The FPD-R fuel pulse damper is a compact version designed to fit into tight spaces and is intended for vehicles with base fuel pressure (the static pressure at start up and idle) between 40-45 PSI. They are ideal for use with all high performance fuel delivery systems. ![]() This new FPD design maintains full damping function throughout the range of pressures seen in the fuel system by utilizing a vacuum reference to equalize pressure on both sides of the damper diaphragm. Radium Engineering has designed the first aftermarket vacuum-referenced fuel pulse dampers, FPD-R and FPD-XR, to ensure proper fuel pulse damping at elevated fuel pressures. However, most OEM fuel pulse dampers are not ideal for use with modified fuel systems. Radium has always recognized the importance of fuel pulse dampers and has designed its fuel rails to accept them. This is done with a spring loaded flexible diaphragm inside of the damper housing. High performance vehicles running high fuel pressures, high flow injectors and boosted applications can be especially susceptible to these pulses and the related consequences.Ī fuel pulse damper works by allowing the volume of the fuel system to change slightly, providing the ability to absorb the pulses. This is commonly experienced as mysterious lean spots and stumbling during acceleration or erratic idle that is difficult to correct through EMS tuning. Hydraulic pulses from the fuel pump and the opening and closing of injectors can create undesirable noise and possible interference with injector flow. THE IMPORTANCE OF USING A FUEL PULSE DAMPER Both fuel pulse dampers are available in direct mount versions that install on a fuel rail and inline versions for use with dead-end fuel systems or that use fuel rails without a port to receive a fuel pulse damper. Radium's FPD-XR fuel pulse damper is designed for vehicles with base fuel pressure between 43-78 PSI and the compact FPD-R fuel pulse damper is designed for vehicles with base fuel pressure between 40-45 PSI. Radium Engineering has released two fuel pulse damper designs for use on high-performance forced induction and naturally aspirated vehicles using large aftermarket injectors.
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